@article{10_21136_CPMF_1918_109398,
     author = {Petr, Karel},
     title = {Dv\v{e} pozn\'amky ku specieln{\'\i}mu p\v{r}{\'\i}padu probl\'emu t\v{r}{\'\i} t\v{e}les},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {268--273},
     publisher = {mathdoc},
     volume = {47},
     number = {4-5},
     year = {1918},
     doi = {10.21136/CPMF.1918.109398},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1918.109398/}
}